Veterinary impregnator



(NovModel.)

' C. C. LYFORD.

VETERINARY IMPRBGNATOR. No. 473,632. Patented Apr. 26,1892.

IINiTEn Sterns Pani* union.,

CHARLES O. LYFORD, OF MINNEAPOLIS, MINNESOTA.

VETERINARY IMPREGNATOR.

SPECIFICATION forming part of Letters Patent No. 473,632, dated April26, 1892. Application led September 18, 1891. Serial No. l1.06160. (Nomodel.)

I'o @ZZ whom t may concern.-

Be itknown that I, CHARLES O. LYFORD, of Minneapolis, in the county ofHennepin and State of Minnesota., have invented certain Improvements inImpregnators for Veterinary Use, of which the following is aspecification.

My invention relates to means for use in breeding mares. I-Ieretoforemuch trouble has been experienced in getting mares into foal, owing tothe contraction or displacement of the female parts so as to close theopening through the cervex, thus preventing the passage of the malesemen into the uterus when it comes into contact with the female ovum,which must take place before impregnation can result. It has been foundby experience that less than fifty per cent. of the attempts at breedingare successful, nearly every mare requiring several services, andnotwithstanding repeated services of the stallion many valuable maresremain barren season after season, thereby causing the owner much eX-pense and also great pecuniary loss, owing to his being deprived ofcolts which would otherwise have been raised. In addition to the lossoccasioned by the inability of the mare to conceive is the detrimentalsapping of the vitality of the stallion, thus greatly limiting thenumber of pregnant mares each season.

The object of this invention is to provide means for insuringimpregnation; and my invention consists, generally, in the deviceshereinafter described, and particularly pointed out in the claims.

My invention will be more readily understood by reference to theaccompanying drawings, in which* Figure l is a longitudinal section of adevice embodying my invention. Fig. 2 is a similar view of another formof my impregnator. Fig. 3 is a side elevation of a device embodying myinvention.

In the drawings, 2 represents the main portion of the device, which isin the form of a tube open at both ends and having a rounded orfunnel-shaped opening in its center corresponding to the opening throughthe tube 2. The tube 2 is provided at its opposite end with the bulb 5,preferably made hollow, so as to make it flexible and capable of `beingcompressed while being inserted, while the tube itself is possessed ofconsiderable rigidity. The disk 8 is preferably in the form of a hollowring surrounding the open end of the tube 2. This ring is tlexible,butpossesses considerable spring, which makes it easily put in place andcauses it to closely engage the surrounding vparts when the device is inuse. Thishollowringforrusacushion, against which the end of the maleorgan is brought when the device is in use, thus preventing thedevice-from interfering with the natural action of the organs when it isbeing used. The hollow bulb at the end of the tube may be of anypreferred form or size, as shown in Figs. 1 and 2.

As above spoken of, the entire device is preferably formed of rubber, soas to be flexible and at the same time possess sufficient rigidity toprevent its being collapsed when in position.

The funnel shape of the opening in the disk end of the device rendersthe same an assistance when in use in creating a vacuum in the uterus bythe action of the male organ against the disk as a valve, therebycausing a suction through the tube and into the uterus. After copulationthe impregnator should be immediately removed to prevent straining.

rIlhe principal advantages of the impregnator are ease of insertion,non-compressibility, and the advantage set forth in the precedingparagraph.

lVhen the device is used, it is carried in through the vagina and theend of the tube pushed through the cervex or neck of the uterus, thesame being first somewhat dilated to make the insertion of the tubeeasy. After being forced through the neck of the womb the disk comes incontact with the posterior end or vaginal surface of the os uteri. Thetube is firmly held in position by the closing of the neck of the wombabout the portion 4. of the tube. Y

Having thus described my invention, I claim as new, and desire to secureby Letters Patentl. The herein-described veterinary instrument,consisting of a tube 2, provided with a flexible bulb at one end thereofand with a hollow flexible ring surrounding its opposite end. i

2. The herein-described veterinary instru- IOO ment, consisting of thetube 2, having a holend, andaflexible ring surrounding said fun- 1o 10Wiiexible ring surrounding one end thereof. nel-shapedend,'substant1a.lly as described.

3. The herein-described Veterinary instruln testimony whereof I havehereunto set ment, consisting of the tube 2, provided withv my hand this8th day of September, 1891. 5- a bulb or rounded end and with a hollowflexi- CHARLES C. LYFORD. ble rlng surrounding its opposite end.

4. The herein-described veterinary instru- In presence Ofment,consisting of the tube 2, having a exi- F. S. LYON, ble bulb at one end,afunnel-shaped opposite A. C. PAUL.

